Video: PCM encoding yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Pulse-code modulation ( PCM ) yog ib txoj kev siv rau digitally sawv cev piv txwv analog signals. Nws yog tus qauv qauv ntawm cov suab hauv computer, compact discs, digital telephony thiab lwm yam kev siv suab digital. Txawm li cas los PCM yog ib lub sij hawm ntau dua, nws feem ntau siv los piav txog cov ntaub ntawv encoded asLPCM.
Cov lus nug tseem yog, PCM system yog dab tsi?
Pulse code modulation ( PCM ) yog ib tug digitalrepresentation ntawm ib tug analog teeb liab uas siv cov qauv ntawm lub amplitude ntawm lub analog teeb liab ntawm ib ntus. Cov ntaub ntawv sampledanalog hloov mus rau, thiab tom qab ntawd sawv cev los ntawm, cov ntaub ntawv binary. PCM yuav tsum tau lub moos yog heev.
Ib tug kuj yuav nug, PCM tso zis yog dab tsi? Kho tshiab Lub Kaum Ob Hlis 31, 2018. PCM (pulse codemodulation) piav qhia txog cov txheej txheem uas tau siv los hloov cov analog audiosignals (sawv cev los ntawm waveforms) rau hauv cov suab digital (sawv cev los ntawm ib qho thiab xoom - zoo li cov ntaub ntawv hauv computer) tsis muaj compression.
Ua raws li qhov xav tau, vim li cas peb thiaj xav tau PCM?
Cov PCM Cov teeb liab yog cov qauv waveform, uas tsis muaj kev cuam tshuam thiab suab nrov dua li cov cim analog. Lownoise susceptibility tso cai PCM Cov cim qhia kom xa mus deb tshaj li cov cim analog tsis muaj teeb liab degradation, cov ntaub ntawv poob thiab distortion.
PCM daim ntawv puv yog dab tsi?
Pulse code modulation ( PCM ) yog ib tug digital schemefor transmitting analog data. Siv PCM , nws muaj peev xwm todigitize tag nrho daim ntawv ntawm cov ntaub ntawv analog, suav nrog puv -motion video, suab, suab paj nruag, telemetry, thiab virtualreality (VR).
Pom zoo:
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Qhov zoo tshaj plaws video encoding hom ntawv yog dab tsi?
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